R 3500 P/U 2WD V8-454 7.4L VIN W 4-bbl (1988)
High Pressure Safety Valve HVAC: Service and Repair
With A-6 Compressor
A-6 Compressor Component View
The pressure relief valve is located at the rear of the compressor
Remove or Disconnect
1. Valve (56).
2. Seal (57).
Clean